failed to exec coverage

[jayvdb]

On Windows, if the Python "Scripts" directory is not in the PATH, and codecov is invoked like C:\...\Scripts\codecov, try_to_run will fail to exec coverage. The same could happen on Unix, but it is less likely.

This can be avoided a few ways, e.g. by calling coverage as a Python package, adding the "Scripts" directory to the PATH for the exec, using sys.executable -m coverage on Python 2.7+, etc.

[stevepeak]

Thanks for expressing this issue @jayvdb.

Would you recommend us trying something like:

if try_to_run('coverage xml') fails:
  try_to_run('sys.executable -m coverage')

[jayvdb]

On Py2.7+, then yes, if the failure was that coverage was not found.
Rather than trying to work out why coverage xml failed, on Python 2.7+ the approach should be to check if coverage exists , then invoke sys.executable.

try:
    import coverage
    try_to_run('sys.executable -m coverage xml')
except ImportError:
    try_to_run('coverage xml')

Py2.6 has problems with -m , and I am not sure that it can be worked around.

However. if you can import and use coverage within Python, rather than creating a subprocess, that would work on Py 2.6, be faster, and give greater control over how coverage failures.

[takluyver]

#202 is my attempt to fix this.